-------------------------------------------------------------------------------
-- mem_hierarchy_ent.vhd
-------------------------------------------------------------------------------
--
-- This file is part of SKUMLI.
-- Copyright (C) 2011 Davide Giuseppe Monaco (black.ralkass@gmail.com)
--
-- SKUMLI is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, either version 3 of the License, or
-- (at your option) any later version.
--
-- SKUMLI is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with SKUMLI.  If not, see <http://www.gnu.org/licenses/>.
--
-------------------------------------------------------------------------------
library ieee;
use ieee.std_logic_1164.all;
-------------------------------------------------------------------------------
entity mem_hierarchy is

  port (
    clk  : in  std_logic;
    rst  : in  std_logic;

    -- control input signals
    rw   : in  std_logic;                     -- from CU
    cs   : in  std_logic;                     -- from CU

    -- address and data in input signals
    addr : in  std_logic_vector(31 downto 0); -- from Datapath
    din  : in  std_logic_vector(31 downto 0); -- from Datapath

    -- output signals
    rdy  : out std_logic;                     -- to CU
    dout : out std_logic_vector(31 downto 0)  -- to Datapath 
  );

end mem_hierarchy;
